<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <form action="target.html">
        <!-- 
            autocapitalize="off"关闭自动补全
            readonly将表单项设置为只读,数据会提交
            disabled将表单项设置为禁用,数据不会提交
            autofocus设置表单项自动获取焦点
         -->
        <input type="text" name="a" value="hello" disabled>
        <br><br>
        <input type="text" name="b" autofocus>
        <br><br>
        <input type="text" name="username" autocapitalize="off">
        <br>
        <br>
        <input type="color">
        <br>
        <input type="email">
        <br>
        <input type="submit">
        <!-- 重置按钮 -->
        <input type="reset">
        <!-- 普通的按钮 -->
        <input type="button" value="按钮" >

        <br>
        <button type="submit">提交</button>
        <button type="reset">重置</button>
        <button type="button">按钮</button>


    </form>

</body>
</html>